Using QtCreator with C/C++ compilers for PIC devices

For those who don't know what PICs are, I'll tell you: they're some small chips that can be programmed (PIC = Programmable Integrated Circuit).
Now, lots of PICs can be programmed using C and C++ (like Microchip's PIC18 family). Microchip is offering XC (and XC++), a C/C++ compiler for the PIC18 family, and as far as I could understand it's basically a GCC compiler that uses Microchip's libraries.
I wasn't able yet to download the compiler and activate it on my system, but since it's a GCC compiler, do you think it could be added to QtCreator's compilers list and use QtCreator to compile the code?

@alex312 I'm very interested in the contents of make.sh. I tried making something like that, but It appears there is no way to pass any information from the build environment to it, like which .c files to compile.